Operating Instructions; Self-Test; Hexadecimal Dump Function - Epson LG1-1070 Service Manual

REV.-A

1.6 OPERATING INSTRUCTIONS

This section describes the self-test and hexadecimal dump functions and also includes the error states,
printer initialization, and buzzer operation.

1.6.1 Self-Test

To run the self-test using draft mode, turn the printer on while pressing the LOAD/EJECT button. To
run the self-test using the letter quality (LQ) mode, turn the printer on while pressing the LINE
FEED button. You can stop or start self-test printing by pressing the PAUSE button. When
you are satisfied with the self-test, stop the printing by pressing the PAUSE button and turn the printer
off.
The firmware revision number is printed on the first line of the self-test, followed by the current D I P
switch settings.
X x x x x x
C o u n t r y / P C
France
German
I

1.6.2 Hexadecimal Dump Function

To put the printer in hex. dump mode, power it on while pressing both the LOAD\ EJECT and LINE
FEED buttons. In hex. dump mode, the printer prints out the hexadecimal representation
of the input data, along with the corresponding ASCII characters. This function is valuable for checking
the data the printer has received from the host. If input data is a nonprintable character code, a period
(.) is printed in the ASCII column.
20 20
75
0.4 20 20 20 20 20
on on
o n o n
on
o f f O r l
y
on
o f f
on
on on
Figure 1-8. Self-Test Printout
74 01
20 69
54
69 73
66 20 61 20 64 61 74 61 20
20 6F
70 72 69 6E 74 6F 75 74 2E 20 54
74
73 20
66 65
69 74
Figure 1-9. Hexadecimal Dump
o f f
Va 1
o f f off
I n v a l i d
o f f R e c e i v e b u f f e r
o f f o f f
on
o f f I
1
i n c h skip
1 rival id
70 0 0
20 61 6E 20 65 78
6 1
6 4
65 73
6F
66
Function
1-20
o f f
id
on
d o n
o f f
o f f
.@. R. . t. .6. .P. D.
i s a n e x a
T h i s
m p l e o f a d a t a d
p r i n t o u t .
i s f ea tu r e m a k e s
i t easy fo
.
o f f
t i